Milling-machine.



.z'g., I i i l l I A. L. DE LEEUW.

MILLING MAOHINE. nrLIoA'rIoN num 81:21.11, 100s.

974,36. l K Patented 001251916. l

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' mwmw y A. L. DE LEEUW. y

MILLING HAOHINE.

nuouxol rnlnn snr Patented ot.25,191o.

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' Snowdon STATES imairfr`- OFFICE.-

nom L. nl miauw, ornuunron. onroyaasmnoafro 'encarnan-mma ncimin conm,'or crncmna'n, omo, a companion. 'i

mme-incanta.

anims ain mui mmm mmfnm' Patented oct. 25, i910.

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To al1 who'm it 'may concern:v l

Be it known that I, Anonrii L. Dn Limrw,

a citizen of the United States at Hamilton, in the county of Butler andtate useful ImErovements. in Milling-Machin' es, of which t e followingis a spec' cation.

My invention relates to an improvement in a vertical milling machine, bywhich .is understood a machine in which the spindle is suspended in avertical lane from the column. In the maohineso this type, now

commonly in use, the spindle ismoimted in 'independent bearings thelower one of which is vertically gibbc tc uic column and the power isapplied to the spindleV above the point of u the operation othevcutterfimpartsfa strain which is thrust upon the gib-wa bearings, soYthat the instant any vwear or ost motion occurs, the spindle bearinlose their alinement without any possibility vfor readjustment. Thepower isgalso applied at the maximum distance from the cutter whichgreatl increases the torsional strain on the spind e.

The object of my invention is to `avoid these undesirable features. Inotherwords, to produce a vertical miller `in which the spindle isjournaledl in' two relatively iixed bearings, supported by averticalllylI adjustable head, the power being app 'ed at a Eointbetween the bearings internal of the ead. Thus the oint o drive is aplied as nearly as possi le to the cutter' an be-l tween supported endsof the s indle, while thebearin being a part o a one-piece head, bod' yadjustable on the column, insures the lperfect preservation andalinement of the indle bearings.

An er object of the invention is to provide a gib-way attachment to thecolumn for the verticallyv adjustable head, which attachment shall haveprovision for delicate adjustment in a vertical head itself can bevertical y alined with absolute precision. This valuable desideratumcould not be realized if the gib-way were imxnutably formed on thecolumn and should haiinpen to be in error as to its alinement.

' carrying out this latter idea, I further provide a construction inwhich the piecefor the head is adjustably secured u the column in amanner which will a mit of per bearing. As a result,4

plane, so that the.

"thc cdjuctgicnc wiuicut cn' intccfcichcc with the driving mechanism orthe spindle.

The features of the invention are more fully setforth'in` the description of the acof Ohio, have invented certainnew 'and'` the head adjust'mechanism.

1 isthe verti column ha' a knee upon which the table 2 is gibbe in theusual manner. The u end ofthe column has the vertically reception of thespindle head 5. Horizontally journaled in the upper end of the column isvthe spindle drivingshaft 6, havthe beveled driving gear 7 on the outer8 re resents a 'b-face-plate secured on the co umn throug which theshaft 6 projects, (see Figs. 3 and 4). This late 8 is preferably slottedreceiving the bo t for con- V'necting it to the plane face 4 of thecolumn, which permits the plate to be swiveled upon the shaft 6 as acenter. c

9 represents a bracket formed on the late s indle bevel gear 11 Ameshing-with ar 7. he spindle -12 is splined wit referegiice to the sleeve 10.

5 represents a spindle head having in its jxposite ends `the spindlebearin s 14, 15. is head is vertically adjustab e on. the plate 8 andbodily carries the spindle, so that the bearings 'for thev spindle arerelatively ixed, thehead and spindle being adjusted as a unit relativeto the column. The drive is applied directly to the spindle at a'pointinterior of the shaft and between these fixed bearings, so that there isa minimum distance between the cutter and point of spindle drive. Thebearings for the opposite ends of the spindle being a part of theone-piece head will maintain a perfect kralinement, and by adjustin theheadon the column the head and spindle as a unit are adjusted in perfectalinement. The head is adjusted vertically by the follow'instrumentalities:-A portion of the hea planed surface 4 for the 8, inwhich is journaled the sleeve 10 o the c face is slotted, through whichthe rack'l cient for-this urpose. "Thevhead-carrying projects, saidrack' being fixed to the head` the `to p and ,ttom spindle, bearingsfits 5, see Fig. 4. 1'( represents -a pinion in mesh the. giway of plate8, and lplate A8 carries with the teeth of the rack 16 and fixed to a;for the. driving vspindle gear l or forming a l of the shaft^18.i` 19repalined with fthe top andbottom bearings. 40v Y resents aLclu sleevefixed tothe shaft18 Therefore, when the head isr removed 'andandrevolved bythe hand wheel 20'for feedthe plate 8 adjusted preciselytoA a vertical ing or adjusting the head quickly. 21 repposition theb-way-will be alined to 'reresents a worm wheel loosely mounted uponceive' the hea and the bearing sleeve 9 will A n 'le shaft 18, providedwith clutch teeth 22, be alined with reference tothe top and bot- 45adapted 'tio` be` by the teeth of the tom bearin of the head.l clutchsleeve 19. 23 ,represents a screw Having m invention,I claim: l threadedknurl upon the end of the sleeve In a machine o f e class described,

19, forming means for moving the sleeve vertical column, a horizontaldriving sha j l5 to andfromtheworm 4wheel 21. When the thereinhorizontally projected through the 50 sleeve 19 isbroughtinto'engagement with column, a plate centered on` the horizontal theworm wheel 21, the worm wheel is then driving shaft and angularladjustable relain eo'nnectionwiththe shaft 18 through the tive theretoon the vert-ica face of the colslee've 19. When the'sleeve 19 is l` l Yumn said plate having a bearing sleeve for 20 from the worm 21, a quickfeed to the head the driving gearof the s indle, ahead slid- 55 vcan beobtained by revolving hand wheel 20. ably mounted on said ate and invertical 24 represents a worm fixed to shaft 25 and .ways formed in saidco umn, a spindle jour- ,revolved -by means ofthe hand wheel 26; -naledin said head, a driving gear on the this forming means for delicatelyadjusting spindle held in said sleeve bearing of said 25 the head. 28reprents a sheave fixed to p ate and splined to the spindle, a gear on6o shaft 18 carrying a chain, said chain carrythe projecting end of thedriving shaft ening a eounterbalance weight, not shown, by gaging saidspindle and means yfor means of which a free movement o f the .headvertically feed said head on said A plate,

.is'obtained. y substantially asv escribed. e l0, The gib-plate 8v isarly adjustable In testimony whereof, I have hereunto 65 j on thevertical face of e column, a yvery set my hand. l slight adjustmentserving ,the purpo. ADOLPH L. DE LEEUW. The outside gib-ways formsuicient me- Witnesses: Y chemical clearanee'and the screws, shown inOLIvna B. KAIsER,

i l5 dotted lines, Fig, 3, have a loose t sulli- I Lmsn BECK.

